LINK-PP INT'L TECHNOLOGY CO., LIMITED
| Payment Terms | L/C, D/A, D/P, T/T, Western Union |
| Supply Ability | 600K/Month |
| Delivery Time | 1 day |
| Packaging Details | Tape & Reel (TR) |
| Series | SMT Transformer |
| Number of Ports | 1 |
| Pins | 12 |
| PoE | PoE (up to 350 mA) |
| Operating Temperature | -40 °C up to +85 °C |
| Isolation Test Voltage | 4500V（RMS） |
| Brand Name | LINK-PP |
| Model Number | 7490140123B |
| Certification | RoHS Compliant, REACH Compliant |
| Place of Origin | Guangdong, China |
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Product Specification
| Payment Terms | L/C, D/A, D/P, T/T, Western Union | Supply Ability | 600K/Month |
| Delivery Time | 1 day | Packaging Details | Tape & Reel (TR) |
| Series | SMT Transformer | Number of Ports | 1 |
| Pins | 12 | PoE | PoE (up to 350 mA) |
| Operating Temperature | -40 °C up to +85 °C | Isolation Test Voltage | 4500V（RMS） |
| Brand Name | LINK-PP | Model Number | 7490140123B |
| Certification | RoHS Compliant, REACH Compliant | Place of Origin | Guangdong, China |
| High Light | 7490140123B ，100 Base-T PoE Transformer ，350µH LAN Transformer | ||
The 7490140123B is a high-performance 10/100 Base-T Surface-Mount (SMT) LAN transformer designed for industrial and automotive Ethernet applications. With a robust 4.5 kV isolation voltage, compact SMT footprint, and 350 µH inductance for EMI suppression, it delivers reliable signal integrity in harsh environments. This transformer complies with IEEE 802.3 standards, supports a 1:1 turns ratio, and operates efficiently from -40°C to +85°C, making it ideal for switches, routers, PLCs, and IoT systems.
LINK-PP offers a high-quality, fully compatible replacement for this model.
Please contact us to request the datasheet.
✔ High-Speed Ethernet – Supports 10/100 Base-T standards (up to 100 Mbps) with 1:1 turns ratio (±5% tolerance) for precise signal coupling.
✔ Robust Isolation – 4.5 kV isolation voltage (1 min, primary to secondary) ensures safety in high-voltage environments.
✔ Industrial Durability – Operates from -40°C to +85°C, ideal for harsh industrial and automotive applications.
✔ Compact SMT Design – Surface-mount package (17.1mm × 14.75mm × 8.65mm).
✔ Integrated EMI Suppression – With 350 µH inductance minimizes signal distortion.
✔ Broad Compatibility – Works with major Ethernet ICs (e.g., Microchip, Texas Instruments) and protocols (EtherCAT, PROFINET).
| Parameter | Value |
|---|---|
| Part Number | 7490140123B |
| Mounting Type | Surface Mount (SMT) |
| Ports | 1 |
| DC Resistance (Max) | 1300mΩ (transformer side) |
| Isolation Voltage | 4.5 kV (RMS, 1 min) |
| Inductance | 350 µH |
| Standards Compliance | IEEE 802.3u/ab/af/at/bt, RoHS |
Company Details
Year Established:
1997
Total Annual:
100,000,000-$120 million
Employee Number:
800~1000
Ecer Certification：
Verified Supplier
LINK-PP is a professional designer and Manufacturer of magnetic telecom and networking components. Founded in Shenzhen in 1997 and began to develop Discrete Transformer. With over 26 years of experience in innovation and technology leadership. Our main products include RJ45 Connectors, LAN Transform... LINK-PP is a professional designer and Manufacturer of magnetic telecom and networking components. Founded in Shenzhen in 1997 and began to develop Discrete Transformer. With over 26 years of experience in innovation and technology leadership. Our main products include RJ45 Connectors, LAN Transform...
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